A. A
B. B
C. C
D. D
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This is the plate with the most growth despite the presence of antibiotic cover.
Therefore, the Correct Answer is C.
Which of the following body systems breaks down proteins into amino acids?
A. Digestive
B. Excretory
C. Circulatory
D. Endocrine
The Correct Answer is A.The digestive system breaks down complex food substances into small and less complex absorbable compounds. Proteins, for instance, are broken down to constituent amino acids through a digestion process that combines mastication and enzymatic breakdown.
The vermiform appendix extends from the region of the large intestine known as which of the following?
A. jejunum
B. Rectum
C. Cecum
D. Achi
The Correct Answer is C.The vermiform appendix is a small, finger-like projection that extends from the cecum, which is the first part of the large intestine.
Which of the following is correct regarding the pH scale?
A. A substance with a pH of 3 is two times more alkaline than a substance with a pH of 4
B. A substance with a pH of 3 is 10 times more acidic than a substance with a pH of 4
C. A substance with a pH of 3 is two times more acidic than a substance with a pH of 4
D. A substance with pH of 3 is 10 times more alkaline than a substance with a pH of 4
The Correct Answer is B.The pH scale is logarithmic, indicating that each whole number change on the pH scale represents a tenfold change in acidity or alkalinity. Therefore, a substance with a pH of 3 is 10 times more acidic than a substance with a pH of 4.
Which of the following organelles is the site of intracellular digestion?
A. Mitochondria
B. Lysosomes
C. Centrosomes
D. Ribosomes
The Correct Answer is B.Lysosomes are membrane-bound organelles that contain lysozymes that are responsible for breaking down waste materials and cellular debris through intracellular digestion. This process helps maintain cellular health and homeostasis by recycling and degrading cellular components.
Which of the following characteristics of water helps explain why coastal areas experience less dramatic temperature changes during the day?
A. Water has a high specific heat capacity
B. Water is a versatile solvent
C. Water forms covalent bonds with other water molecules
D. Water's adhesive properties prevent evaporation
The Correct Answer is A.Water has a high specific heat capacity, which means it can absorb and store a large amount of heat energy without significantly changing in temperature. This helps moderate the temperature fluctuations of the air near the coast, as water can store heat during the day and release it at night, or vice versa.
Which of the following tools can be used to measure the turbidity of a liquid by measuring the transmission of light through the sample?
A. Spectrophotometer
B. Centrifuge
C. Electro photometer
D. Microdensitometer
The Correct Answer is A.A spectrophotometer is an instrument that measures the intensity of light absorbed after it passes through a sample solution. With the spectrophotometer, the concentration of a chemical substance can be determined by measuring the intensity of light detected.
Which of the following is an example of a biological macromolecule?
A. Nucleic acid, Protein
B. Monosaccharide
C. Amino and
D. Protein
The Correct Answer is A.Biological macromolecules are large organic molecules such as carbohydrates, lipids, nucleic acids, and proteins. They are built from smaller molecules, which are linked commonly by covalent bonds, and these can be broken down.
Which of the following organs removes nitrogenous waste from the body?
A. Large Intestines
B. Liver
C. Kidneys
D. Gall Bladder
The Correct Answer is C.The kidneys are the primary organs involved in the excretion of nitrogenous wastes. Nitrogenous wastes are mostly products of protein metabolism in the liver. One of the common nitrogenous waste products is urea, which is excreted through the kidneys.
A slice of apple left on a table slowly goes brown due to an enzymatic reaction. Dipping the apple slice in lemon juice prevents it from browning Which of the following best explains this result?
A. Lemon juice has enzymes which reverse the browning reaction
B. Lemon juice has a pH which inactivates the enzymes
C. Lemon juice functions to bleach the brown material
D. Lemon juice functions to dilute the brown material
The Correct Answer is B.Browning of the apple surface is due to the action of the enzyme polyphenol oxidase. Lemon juice is acidic and lowers the pH of the apple's surface. This inactivates the enzyme polyphenol oxidase, which works best at a neutral pH. This in turn reduces the browning action on the apple.
The hip is an example of which of the following type of joints?
A. Ball-and-socket
B. Pivot
C. Gliding
D. Hinge
The Correct Answer is A.The hip joint is an example of a ball-and-socket joint. The hip joint is formed by the articulation of the head of the femur with the acetabulum of the pelvis. The rounded head of the femur (ball) fits into the cup-shaped acetabulum (socket), allowing for a wide range of motion in multiple planes.